Watchmaker&#39;s micrometric gauge



Oct. 27, 1931. A. A. zAJTMuvy WATCHMAKERS MICROMETRIC GAUGE Filed Feb l0WITNESSES ,25 omitted, and a part broken out and sectioned '.39 bor anda part of a watch dial in section. C, which arbor has the usual reducedend c 'So L-byf transverse pivot 18 centered at one end that theterminal16 is away from the terc5.

Patented ot..f27,L 1931 y l Lgzgyggg UNITED -sTATEsg-gparr-ENT OFFICE vi i l VAIKFB'ED A ZAJTMAN; .0F71 i l 'Y l' WATCHMAKERS 1viIcnoiinfrn1g GAZGE if Application inea 'February 10, 192s.' se'rikalpltm` ,Q5-,418q

My invention relates to a gauge which jacent side of the forked portion11'extend although useful as a gauge generally is more Y intov pin holes121 in plate 20 for properly particularly designed for use in gaugingthe positioning the plate 20 to receive the screws larger and smallerdiameters of a watch k21. f 5l arbor. f i e In the tubular upper portionyof standard: Thegeneralobject of myinvention is to pro- 10 operates aplunger 22 having at its lower vide an improved gauge whereby toaccurateend a head 23 adapted to lbe pressed down ly determine the sizeof the hole to be formed against a toothed sector- 24 which turns an ina cannon pinion of a watch or the diameter intermediate pinion 25`meshing withthe arofthe hour wheel tube to conform precisely cuate rack17 to rock thegauge element 15. to with the twov diameters of the watcharbor. The sector 24 is restored to normal .position Reference is to behad to the accompanyafter movement bydepression of' plunger 22 ingdrawings formingpart of this specilicaby reason'of a spring 26 coiledaboutthe 7 tion, it being understood that the drawings securing screw 27of said sector, one a-rm28 of l5 are merely illustrative of one exampleof the the spring passing through bracket 110`-in 65 invention. t-egralywith standard 10;v it being apparent Figure 1V is a front elevation ofa watch- 'that' the terminal 16' will be separatedfrom f makersmicrometric gauge embodying my infthe terminal 13 the'maximum distancewhen vention; the 1sector'24 ris in its normal positionl y Figure 2 is arear elevation thereof with 'f A pointer 29is provided on the shaft 30of 70 apart broken out andfsectioned to show the intermediate pinion sothat the pointer operating plunger; e v o turns with the turningof saidpinion' and Figure 3 is an edge view of the lower pormaybe givenmovement over the face of tionofr'the gauge, theupper portion being -anindicating dial 31. Y Y.

V,In the use of the watchmalers micrometric to show the indicating dial;and gaugefformed asdescribed, the convergent Figure 4 is a detail inelevation of the terterminals 13, 16 of the gauge members 12, 15 minalsof vthe gauge members showing thek are adapted to be entered through thebore A same in connection with a portion of an arof a watch dial B togauge the watch arbor ,K

In carrying` out my invention in practice in to Vreceive the usualcannon pinion of the accordance with the illustrated example, the watch,while the larger diameter of the gauge is made with astandard 10 havinga arbor C receives the hour wheel tube. The

n' lforked lower end 11- integral with whichis ,plunger 22 is moveddownwardly to rock the, y a gauge member 12 having its te-rminal'13element 15, through the intervention of the S5 angularly disposed. rack24, .pinionv 25 and rack 17, thereby caus- The numeral f 14 indicates agraduated ing the movement of the terminal 16 away gauge plate formingno particular part of from the terminal 13 to a position so that the thepresent invention. Coacting gauge elearbor C may be inserted between thetermio ment 15,y is formed with an angularly disnals. The spring 26 thenurges the terminal 90 posed terminal end 16, the terminals 13, 16 16toward Vthe terminal 13, causing both terkbeing convergent. Y minals'toembrace the arbor C. In this way Y, On theupper end of element 15 is anaren-f the pointer 29 will be given movement over atejrack 17 and saidelement 15 is pivoted the dial31 commensurate with the distance inthefixed member 19 at thelower end of minal 13 wherebythe smaller diameterc and vthe forked portion 11` of standard l10, and the larger diameterof the arbor C will be centered'at its opposite end in a plate 20deaccurately gauged and indicated.

r tachably-secured to one side of the forked I would state furthermorethat while the- "D portion 11 by screws 21. Pins 111 on theadillustratedexample constitutes a practical 10Q 'i A A K. j y v y embodiment ofmynvention, I do not limit f mysel'trietly: to the exact detailshe'r'ein'iL lustratred5 since, manifestly, thesamel earl-'be l,

Vconsiderably variedgwithout departure from l' H 5 the spirit of: theinvention as definedl in the Y appended claims. .Y

I claim; v I -r i Y gaugegothe: clase desefbedgi'nchid- V ing a Standardhaving forked lower' end l Y i110 Vand a, centrally apertured uppe"end',7a-flxed f" gauge member mountedVA betweenthe'foksfof Said Vlowerend and-'a pivoted :gaugemembi-ny v pivotallymountedbetwee'n'Sidroikswvheeby the position ofthe smemelativeto the. A

fixed membe` maybe va'iefd, a plunger -xial- F :lymovablein-the lippe.lend of's'aid standard,

.Y af--dalon xsaid standardia' pointer ongsaid the dialgpnd means.operated by the Vmove- Y 2156'viableiplungereain' the :lippen end f ofy.thestanda1-d, imeansfinludingi anrotata:b1emeniberr ony Yithe?Standardtowoauee thefpivotalmovement 'rof-itheipivotedzgaugememberin reeponseto y Y f o the standard, :and Le Vgpointer'aeonneeted with" Lsaid .rotatablefmember andfdlsposedqto xmove a Elin-:relation totherfaeefofsed:dial.

